(19)
(11) EP 0 803 008 A1

(12)

(43) Date of publication:
29.10.1997 Bulletin 1997/44

(21) Application number: 95936828.0

(22) Date of filing: 31.10.1995
(51) International Patent Classification (IPC): 
D21C 11/ 00( . )
(86) International application number:
PCT/SE1995/001281
(87) International publication number:
WO 1996/014467 (17.05.1996 Gazette 1996/22)
(84) Designated Contracting States:
AT DE ES FR PT

(30) Priority: 04.11.1994 SE 19940003779

(71) Applicant: KVAERNER PULPING AB
651 15 Karlstad (SE)

(72) Inventor:
  • WENNBERG, Olle
    S-413 18 Göteborg (SE)

   


(54) METHOD OF PRECIPITATING TRANSITION METALS AND ALKALINE EARTH METALS FROM BLEACH PLANT EFFLUENTS